using %_directory%\00-%artist%-%album%.m3u as playlist name gets me an unwanted \ in the m3u file: #EXTM3U #EXTINF:372,Nightwish - Bless The Child
\01-Nightwish-Bless The Child.mp3 #EXTINF:235,Nightwish - End of All Hope
\02-Nightwish-End of All Hope.mp3 #EXTINF:259,Nightwish - Dead To The World
...
preview of the m3u filename is Nightwish-2002-Bless The Child\\00-Nightwish-Bless The Child.m3u
also in the tag-filename preview it shows two \ after the album for this:
%artist%-%year%-%album%$num("%track%",2)-%artist%-%title%